Financial teaching display device capable of automatically displaying teaching materials and facilitating comparison

Abstract

The invention is applicable to the technical field of financial teaching devices, and provides a financial teaching display device capable of automatically displaying teaching materials and facilitating comparison, the financial teaching display device comprises a display unit, the display unit comprises a mounting seat, a mounting shaft, a mounting column, a first telescopic rod, a mounting plate and a sucker, the mounting seat is mounted on a rack, and the mounting shaft is mounted on the rack; the financial teaching display device comprises a rack, the front side of the rack is provided with a side-by-side display assembly, and the side-by-side display assembly comprises a sliding seat, a flexible belt and a flexible connecting piece. The power assembly drives the installation column to rotate, the installation column drives the next teaching template to rotate to the teaching position, the multiple first telescopic rods synchronously extend or retract, the distance between every two adjacent installation plates can be adjusted, teaching templates of different width sizes can be installed, adaptability is improved, multiple teaching modes can be carried out, and the teaching effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of financial teaching devices, and in particular relates to a financial teaching display device that can automatically display teaching materials for easy comparison. Background Art

[0002] Financial teaching is specifically for the education and learning of financial majors. When teaching financial majors, teaching devices are needed.

[0003] After retrieval, Chinese invention patent CN113903222B discloses a financial teaching display device that can automatically display teaching materials for easy comparison, including a display board, which is the main teaching display body for financial teaching. A column is fixedly arranged at the bottom of the display board; a twist pressing rod penetrates the outer surface of the display board, and a support spring is fixedly connected to the end of the pressing rod, and the end of the support spring is fixedly arranged inside the display board.

[0004] In the above-mentioned prior art, multiple teaching templates are stacked and then displayed one by one. However, there are also some problems: when the widths of different teaching templates become larger, the device cannot make adaptive adjustments, and it can only be displayed one by one according to the stacking order, and the teaching templates cannot be selected. Summary of the Invention

[0005] The present invention provides a financial teaching display device that can automatically display teaching materials for easy comparison, aiming to solve the above problems.

[0006] The present invention is implemented as follows. A financial teaching display device that can automatically display teaching materials for easy comparison includes a display unit, and the display unit includes: A mounting base; A vertical mounting shaft rotatably mounted on the mounting base. An installation column is fixed to the top of the mounting shaft, and a power assembly for driving the mounting shaft to rotate is mounted on the mounting base; Multiple first telescopic rods circumferentially and equally spaced and fixed on the installation column, and the telescopic direction of the first telescopic rod is along the radial direction of the installation column; A mounting plate fixed to the end of the first telescopic rod away from the installation column. A plurality of suction cups are respectively mounted on both sides of the first telescopic rod on the outer side of the mounting plate for adsorbing and fixing teaching templates.

[0007] Preferably, the suction cups on the adjacent ends of adjacent two mounting plates are all connected to a vacuum pump through a flexible air pipe, and the vacuum pump is fixedly installed on the outer side wall of the installation column.

[0008] Preferably, the power assembly includes: A first friction wheel fixed to the mounting shaft; The third stepping motor fixed on the mounting base and located on one side of the mounting shaft, a second friction wheel is fixed on the output shaft of the third stepping motor, and the second friction wheel is arranged at an interval from the first friction wheel; A driving friction wheel arranged between the first friction wheel and the second friction wheel, and the driving friction wheel can form friction pairs with both the first friction wheel and the second friction wheel.

[0009] Preferably, the mounting base is mounted on the frame, and a side-by-side display component is mounted on the front side of the frame. The side-by-side display component includes: Sliding seats mounted on both side walls of the frame; Two flexible belts connected between the top and bottom ends of the sliding seats. Flexible connecting pieces are fixedly arranged on the inner side surfaces of the flexible belts, and the flexible connecting pieces on the two flexible belts are respectively connected and matched with the fittings fixed at the top and bottom ends of the teaching template.

[0010] Preferably, a tension sensor is connected between the flexible belt and the sliding seat, and the tension sensor is electrically connected to the second stepping motor.

[0011] Preferably, the side-by-side display component further includes: A second lead screw arranged longitudinally and rotatably mounted on both side walls of the frame. The second lead screw passes through the sliding seat and is threadedly connected thereto, and the sliding seat is slidably connected to the frame; A second stepping motor fixedly connected to one end of the second lead screw. The second stepping motor is fixed on the frame, and the tension sensor is electrically connected to the second stepping motor.

[0012] Preferably, the mounting base is horizontally slidably mounted on the bottom of the frame, and a driving component for driving the mounting base to slide horizontally is mounted on the frame.

[0013] Preferably, the driving component includes: A first lead screw arranged horizontally and rotatably mounted on the bottom of the frame. The first lead screw passes through the mounting base and is threadedly connected thereto; A first stepping motor fixed on the frame for driving the first lead screw to rotate. The output shaft of the first stepping motor can be fixedly connected to the first lead screw through a coupling.

[0014] Preferably, an installation rod is rotatably installed on the installation shaft, the driving friction wheel is rotatably installed at one end of the installation rod, a second telescopic rod is provided at the other end of the installation rod, one end of the second telescopic rod is hinged to the upper surface of the installation seat, and the other end is hinged to the other end of the installation rod. A friction strip is provided on one side of the driving friction wheel opposite to the first friction wheel. The friction strip is horizontally arranged and its two ends are respectively fixedly connected to the two side walls of the frame. When the driving friction wheel forms a friction pair with the first friction wheel and the second friction wheel respectively, the driving friction wheel is separated from the friction strip. When the driving friction wheel forms a friction pair with the first friction wheel and the friction strip respectively, the driving friction wheel is separated from the second friction wheel.

[0015] Preferably, a fixing rod is coaxially arranged inside the installation column. The fixing rod is rotatably connected to the top end of the installation column. The top end of the fixing rod is fixedly connected to the slider. The slider is horizontally slidably connected to the top of the frame. An infrared emitter is fixedly installed at the middle position of the front side wall of the fixing rod. A plurality of infrared receivers are circumferentially and equally spaced and fixedly installed on the inner cavity side wall of the installation column. The number of infrared receivers is equal to that of the vacuum pumps and they are electrically connected in one-to-one correspondence. The tension sensor is electrically connected to the infrared emitter.

[0016] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects: The financial teaching display device provided by the present invention that can automatically display teaching materials for convenient comparison is provided with an installation seat, an installation shaft, an installation column, a first telescopic rod, an installation plate and a suction cup. The installation column is driven to rotate by a power component, and the installation column drives the next teaching template to rotate to the teaching position. By synchronously extending or shortening multiple first telescopic rods, the distance between adjacent two installation plates can be adjusted, and teaching templates with different width dimensions can be installed, improving adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the front view of a financial teaching display device provided by the present invention that can automatically display teaching materials for convenient comparison; Figure 2 is the top view of a financial teaching display device provided by the present invention that can automatically display teaching materials for convenient comparison; Figure 3 is the top view of the display unit in a financial teaching display device provided by the present invention that can automatically display teaching materials for convenient comparison; Figure 4 is Figure 1 the partial enlarged view in Figure 5 is the state change diagram of the first friction wheel, the second friction wheel, the driving friction wheel and the friction strip in a financial teaching display device provided by the present invention that can automatically display teaching materials for convenient comparison.

[0018] Annotation of reference numerals: 1. First telescopic rod; 2. Mounting plate; 3. Suction cup; 4. Air pipe; 5. Vacuum pump; 6. Mounting column; 7. Teaching template; 8. Fixed rod; 9. Infrared receiver; 10. Infrared transmitter; 11. First lead screw; 12. First stepping motor; 13. Second stepping motor; 14. Second lead screw; 15. Slide seat; 16. Tensile sensor; 17. Flexible connecting piece; 18. Flexible belt; 19. Frame; 20. Friction strip; 21. Slide block; 22. Mounting seat; 23. Third stepping motor; 24. First friction wheel; 25. Second friction wheel; 26. Second telescopic rod; 27. Mounting rod; 28. Driving friction wheel. Detailed implementation mode

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0020] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment at every occurrence in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] An embodiment of the present invention provides a financial teaching display device that can automatically display teaching materials for convenient comparison, as Figures 1 - 5 shown, including a display unit, and the display unit includes: Mounting seat 22; A vertical mounting shaft rotatably mounted on the mounting seat 22, the top of the mounting shaft is fixed with a mounting column 6, which can be fixed by welding, and a power assembly for driving the mounting shaft to rotate is mounted on the mounting seat 22; A plurality of first telescopic rods 1 circumferentially and equally spaced and fixed on the mounting column 6, which can be electric push rods or hydraulic rods, and the telescopic direction of the first telescopic rod 1 is along the radial direction of the mounting column 6; A mounting plate 2 fixed to the end of the first telescopic rod 1 away from the mounting column 6, and a plurality of suction cups 3 are respectively mounted on both sides of the first telescopic rod 1 on the outer side of the mounting plate 2 for adsorbing and fixing the teaching template 7.

[0022] During teaching, a teaching template 7 is installed between the adjacent ends of each pair of adjacent mounting plates 2 through a suction cup 3. After explaining one teaching template 7, the driving assembly drives the mounting column 6 to rotate. The mounting column 6 drives the next teaching template 7 to rotate to the teaching position. Multiple first telescopic rods 1 can be synchronously extended or shortened, and the distance between two adjacent mounting plates 2 can be adjusted, so that teaching templates 7 with different width dimensions can be installed, improving adaptability.

[0023] Among them, the suction cups 3 on the adjacent ends of two adjacent mounting plates 2 are all connected to a vacuum pump 5 through a flexible air pipe 4. The vacuum pump 5 is fixedly installed on the outer side wall of the mounting column 6 and can be fixed by screws. When installing the teaching template 7, the vacuum pump 5 works to generate a vacuum, and the suction cup 3 is used to adsorb and fix the teaching template 7 in cooperation. When the teaching template 7 needs to be removed, the suction cup 3 loses vacuum.

[0024] In this embodiment, the driving assembly includes: A first friction wheel 24 fixed on the mounting shaft and can be fixed by screws; A third stepping motor 23 fixed on the mounting seat 22 and located on one side of the mounting shaft and can be fixed by bolts. A second friction wheel 25 is fixed on the output shaft of the third stepping motor 23, and the second friction wheel 25 and the first friction wheel 24 are arranged at intervals; A driving friction wheel 28 arranged between the first friction wheel 24 and the second friction wheel 25. The driving friction wheel 28 can form a friction pair with both the first friction wheel 24 and the second friction wheel 25. When the third stepping motor 23 is started, the third stepping motor 23 drives the second friction wheel 25 to rotate. The second friction wheel 25 drives the first friction wheel 24 to rotate through the driving friction wheel 28. The first friction wheel 24 drives the mounting column 6 to rotate through the mounting shaft. Rubber rings can be arranged on the circumferential walls of the first friction wheel 24, the second friction wheel 25 and the third friction wheel to increase the friction force, and anti-slip patterns or anti-slip points are arranged on the surface of the rubber rings.

[0025] In specific implementation, the mounting seat 22 is installed on the frame 19, and a side-by-side display assembly is installed on the front side of the frame 19. The side-by-side display assembly includes: Sliding seats 15 installed on the two side walls of the frame 19; Two flexible belts 18 connected between the top and bottom ends of the sliding seats 15. Flexible connectors 17, such as flexible magnetic stickers or magic tapes, are fixedly arranged on the inner side surfaces of the flexible belts 18. The flexible connectors 17 on the two flexible belts 18 are respectively connected in cooperation with the fittings fixed at the top and bottom ends of the teaching template 7; Multiple teaching templates 7 can be installed side by side between the two flexible belts 18, which is convenient for the comparative teaching mode.

[0026] Further, a tension sensor 16 is connected between the flexible belt 18 and the sliding seat 15, and the tension sensor 16 can be fixedly connected to the flexible belt 18 and the sliding seat 15 respectively by screws.

[0027] Furthermore, the side-by-side display component further includes: A second lead screw 14 longitudinally arranged and rotatably mounted on both side walls of the frame 19, which can be rotatably mounted through bearings and bearing seats. The second lead screw 14 passes through the sliding seat 15 and is threadedly connected thereto, and the sliding seat 15 is slidably connected to the frame 19; A second stepping motor 13 fixedly connected to one end of the second lead screw 14. The second stepping motor 13 is fixed to the frame 19 and can be fixed by bolts. The tension sensor 16 is electrically connected to the second stepping motor 13, and the output shaft of the second stepping motor 13 can be fixedly connected to one end of the second lead screw 14 through a coupling; By driving the second lead screw 14 to rotate through the second stepping motor 13, the second lead screw 14 drives the sliding seat 15 to move, and the sliding seat 15 drives the flexible belt 18 to move, so that the position of the flexible belt 18 can be adjusted.

[0028] Preferably, the mounting seat 22 is horizontally slidably mounted on the bottom of the frame 19, and a driving component for driving the mounting seat 22 to slide horizontally is mounted on the frame 19.

[0029] In this embodiment, the driving component includes: A first lead screw 11 horizontally arranged and rotatably mounted on the bottom of the frame 19, which can be rotatably mounted through a bearing. The first lead screw 11 passes through the mounting seat 22 and is threadedly connected thereto; A first stepping motor 12 fixed to the frame 19 for driving the first lead screw 11 to rotate, which can be fixed by bolts. The output shaft of the first stepping motor 12 can be fixedly connected to the first lead screw 11 through a coupling.

[0030] Start the first stepping motor 12, the first stepping motor 12 drives the first lead screw 11 to rotate, and the first lead screw 11 drives the mounting seat 22 to move.

[0031] Further, an installation rod 27 is rotatably installed on the installation shaft. The driving friction wheel 28 is rotatably installed at one end of the installation rod 27. A second telescopic rod 26 is provided at the other end of the installation rod 27. One end of the second telescopic rod 26 is hinged to the upper surface of the installation seat 22, and the other end is hinged to the other end of the installation rod 27. A friction strip 20 is provided on the side of the driving friction wheel 28 opposite to the first friction wheel 24. The friction strip 20 is horizontally arranged and its two ends are respectively fixedly connected to the two side walls of the frame 19. When the driving friction wheel 28 and the first friction wheel 24 form a friction pair respectively, the driving friction wheel 28 is separated from the friction strip 20. When the driving friction wheel 28 and the first friction wheel 24 and the friction strip 20 form a friction pair respectively, the driving friction wheel 28 is separated from the second friction wheel 25.

[0032] In this embodiment, a fixed rod 8 is coaxially arranged in the mounting column 6. The fixed rod 8 is rotatably connected to the top end of the mounting column 6, and can be rotatably connected through a bearing. The top end of the fixed rod 8 is fixedly connected to the slider 21. The slider 21 is horizontally slidably connected to the top of the frame 19. An infrared emitter 10 is fixedly installed at the middle position of the front side wall of the fixed rod 8. A plurality of infrared receivers 9 are circumferentially and equally spaced and fixedly installed on the inner cavity side wall of the mounting column 6, and can be fixed by screws. The number of the infrared receivers 9 is equal to that of the vacuum pumps 5 and they are electrically connected in one-to-one correspondence. The tension sensor 16 is electrically connected to the infrared emitter 10.

[0033] When the comparative teaching mode is required, the second stepping motor 13 drives the second lead screw 14 to rotate. The second lead screw 14 drives the slide block 15 to move, and the slide block 15 drives the two flexible belts 18 to approach and press against the teaching template 7. When the value of the tension sensor 16 exceeds the set value, the second stepping motor 13 stops and the infrared emitter 10 is turned on. Then, the second telescopic rod 26 extends, and the second telescopic rod 26 drives the mounting rod 27 to rotate. The mounting rod 27 drives the transmission friction wheel 28 to move to form friction pairs with the first friction wheel 24 and the friction strip 20 respectively. Then, the first stepping motor 12 drives the first lead screw 11 to rotate, and the first lead screw 11 drives the mounting seat 22 to move. The mounting seat 22 drives the mounting column 6 and the transmission friction wheel 28 to move. The relative movement between the transmission friction wheel 28 and the friction strip 20 causes the transmission friction wheel 28 to rotate. The transmission friction wheel 28 drives the first friction wheel 24 to rotate, the first friction wheel 24 drives the mounting column 6 to rotate, and the mounting column 6 drives the teaching template 7 to move. Thus, the teaching templates 7 are automatically installed on the two flexible belts 18 one by one through the flexible connectors 17, facilitating comparative teaching. When an infrared receiver 9 is directly opposite to the infrared emitter 10, the vacuum pump 5 corresponding to the infrared receiver 9 is communicated with the atmosphere, and the suction cup 3 loses vacuum and releases the teaching template 7. A two-way two-position solenoid valve and a three-way pipe can be installed in front of the air inlet of the vacuum pump 5. When the bypass is shut off, the vacuum pump 5 sucks air from the suction cup 3. When the bypass is communicated with the atmosphere, the atmosphere enters the suction cup 3, and the suction cup 3 loses vacuum. Initially, it is preferably that the mounting column 6 is located at one end of the frame 19 and moves from one end to the other end.

[0034] In summary, the present invention provides a financial teaching display device that can automatically display teaching materials for convenient comparison. It has two working modes, specifically: Single-piece teaching mode: A teaching template 7 is installed between the adjacent ends of each group of adjacent mounting plates 2 through the suction cup 3. After explaining one teaching template 7, the power assembly drives the mounting column 6 to rotate, and the mounting column 6 drives the next teaching template 7 to rotate to the teaching position.

[0035] Comparison teaching mode: The second lead screw 14 is driven to rotate by the second stepping motor 13. The second lead screw 14 drives the slide 15 to move. The slide 15 drives the two flexible belts 18 to approach and press against the teaching template 7. When the value of the tension sensor 16 exceeds the set value, the second stepping motor 13 stops and the infrared emitter 10 is turned on. Then, the second telescopic rod 26 extends. The second telescopic rod 26 drives the mounting rod 27 to rotate. The mounting rod 27 drives the driving friction wheels 28 to move to form friction pairs with the first friction wheel 24 and the friction strip 20 respectively. Then, the first stepping motor 12 drives the first lead screw 11 to rotate. The first lead screw 11 drives the mounting seat 22 to move. The mounting seat 22 drives the mounting column 6 and the driving friction wheels 28 to move. The relative movement between the driving friction wheels 28 and the friction strip 20 causes the driving friction wheels 28 to rotate. The driving friction wheels 28 drive the first friction wheel 24 to rotate. The first friction wheel 24 drives the mounting column 6 to rotate. The mounting column 6 drives the teaching template 7 to move. Thus, the teaching templates 7 are automatically installed on the two flexible belts 18 one by one through the flexible connectors 17.

[0036] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0037] In the embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above-mentioned unit division is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the shown or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0038] The units described as separate components above may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without making creative efforts, combine, add or delete the features in the embodiments of the present invention according to the circumstances or make other adjustments, so as to obtain different technical solutions that essentially do not depart from the concept of the present invention, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A financial teaching display device capable of automatically displaying teaching materials for easy comparison, comprising a display unit, characterized in that: The display unit comprises: Mounting seat; A vertical installation shaft rotatably mounted on the installation seat, a mounting column being fixed to the top of the installation shaft, and a power assembly for driving the installation shaft to rotate is mounted on the installation seat; A plurality of first telescopic rods fixed on the mounting column at equal intervals in an annular direction, wherein the telescopic direction of the first telescopic rods is along the radial direction of the mounting column; A mounting plate is fixed to an end of the first telescopic rod away from the mounting column, and a plurality of suction cups are respectively installed on the outer side of the mounting plate located on both sides of the first telescopic rod for adsorbing and fixing the teaching template.

2. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 1, characterized in that: The suction cups on the adjacent ends of two adjacent mounting plates are connected to a vacuum pump through a soft air pipe, and the vacuum pump is fixedly installed on the outer side wall of the mounting column.

3. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 2, characterized in that: The power assembly comprises: a first friction wheel fixed on the mounting shaft; A third stepper motor is fixed on the mounting seat and is located on one side of the mounting shaft, a second friction wheel is fixed on the output shaft of the third stepper motor, and the second friction wheel is spaced apart from the first friction wheel; The transmission friction wheel is arranged between the first friction wheel and the second friction wheel, and the transmission friction wheel can form a friction pair with both the first friction wheel and the second friction wheel.

4. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 3, characterized in that: The mounting base is mounted on a frame, and a side-by-side display assembly is mounted on the front side of the frame. The side-by-side display assembly includes: Slide seats installed on both side walls of the frame; Two flexible belts are connected between the top and bottom ends of the slide seat, and flexible connectors are fixed on the inner side of the flexible belts. The flexible connectors on the two flexible belts are respectively connected with the accessories fixed on the top and bottom ends of the teaching template.

5. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 4, characterized in that: A tension sensor is connected between the flexible belt and the slide seat, and the tension sensor is electrically connected to the second stepping motor.

6. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 5, characterized in that: The side-by-side display component also includes: A second screw rod is longitudinally arranged and rotatably mounted on both side walls of the frame, the second screw rod passes through the sliding seat and is threadedly connected thereto, and the sliding seat is slidably connected to the frame; A second stepper motor is fixedly connected to one end of the second screw rod, the second stepper motor is fixed on the frame, and the tension sensor is electrically connected to the second stepper motor.

7. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 6, characterized in that: The mounting seat is horizontally slidably mounted on the bottom of the frame, and a driving component for driving the mounting seat to slide horizontally is mounted on the frame.

8. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 7, characterized in that: The drive assembly comprises: A first screw rod is horizontally arranged and rotatably mounted on the bottom of the frame, wherein the first screw rod passes through the mounting seat and is threadedly connected thereto; A first stepper motor is fixed on the frame and is used to drive the first screw rod to rotate. The output shaft of the first stepper motor can be fixedly connected to the first screw rod through a coupling.

9. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 8, characterized in that: A mounting rod is rotatably mounted on the mounting shaft, and the transmission friction wheel is rotatably mounted on one end of the mounting rod. A second telescopic rod is provided at the other end of the mounting rod. One end of the second telescopic rod is hinged to the upper surface of the mounting seat, and the other end is hinged to the other end of the mounting rod. A friction strip is provided on the side of the transmission friction wheel opposite to the first friction wheel. The friction strip is horizontally arranged and both ends are fixedly connected to the two side walls of the frame respectively. When the transmission friction wheel forms a friction pair with the first friction wheel and the second friction wheel respectively, the transmission friction wheel is separated from the friction strip. When the transmission friction wheel forms a friction pair with the first friction wheel and the friction strip respectively, the transmission friction wheel is separated from the second friction wheel.

10. The financial teaching display device capable of automatically displaying teaching materials for convenient comparison as claimed in claim 9, characterized in that: A fixing rod is coaxially arranged inside the mounting column, the fixing rod is rotatably connected to the top end of the mounting column, the top end of the fixing rod is fixedly connected to a slider, the slider is horizontally slidably connected to the top of the frame, an infrared transmitter is fixed at the middle position of the front side wall of the fixing rod, a plurality of infrared receivers are circumferentially fixed at equal intervals on the inner cavity side wall of the mounting column, the infrared receivers are equal in number to the vacuum pumps and are electrically connected one-to-one, and the tension sensor is electrically connected to the infrared transmitter.

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